Joey7489

iTrader: (21)

Hey all...
I ordered PRC 5.3 Liter 2.5 heads from Texas-speed. Im basically a cam only car right now with gears, full exhaust, and just some minor stuff.

I wanted to see whats going to make more power in the long run

PRC 2.5 220CC 5.3 L heads

PRC 2.5 205CC LS6 ported heads

or any other suggestions in the same price range?


The only problem is I already ordered the heads and they are processing my order. I have to decide quickly, so quick replies would be very very nice.

Thanks!

Ericbigmac83

iTrader: (19)

I think you made a good choice.

chae

iTrader: (8)

I am wondering the same thing, but leaning toward the stage 2.5 5.3L heads. Many people on the site seem to be putting down great numbers.

PREDATOR-Z

206 LS6 ported? They don't exist. The only benefit between the 2 is the 5.3 has a 1>1.5cc smaller chamber.
I prefer the LS6 (243 casting), but that is just me. For your application you can't go wrong either way.

john563

iTrader: (17)

My friend has that cam in an A4 with the prc ls6 heads with ls6 intake and put down 400rwhp tourque was around 360-370.I have the stage 2.5 5.3 l heads with a TR224 cam with a ported fast 90/90 and put down 417rwhp 407rwt in an A4. Iknow the pported fast just throws a loop in the comparison,but hope it helps you out.I though about going bigger to a T2,but dont want my tourque to drop.I dont know if the Tr224 cam gave me the tourque or if its the heads or ported fast,so I don t know what cam Ill put.I thought about the G5x1. Well i hope this helps you out

PREDATOR-Z

It is the cam, its VEs are right for midrange trq.
If you want more trq out of a TV2, then you need to optimize its compressions (SCR/DCR)
Also running a tight LSA helps in that department

john563

iTrader: (17)

How would the G5x1 compare using the 5.3heads or am i better off with the T2 as the origianl poster of this thread has with his 5.3 heads

PREDATOR-Z

The X1 will make more low>midrange trq and within 10rwhp of the TV2 (Depending on which LSA).

Might want to go custom:
227/230 .629/.600 112+4 LSA (custom grind comp cam), kinda like a G5X1 on steroids.

john563

iTrader: (17)

how would these cams compare to the tr224/12 cam I have now.I how much more rwhp will i get if i go with a
T2
g5x1
custom227/230 .629/600 112 plus 4 lsa
I want to say sorry to the original poster of thread I did not mean to high jack your thread,but think it will help with your question

PREDATOR-Z

The custom cam I gave will make more undercurve power than both 5X1 and TV2.

Has better PTV as well and if those heads are with 2.02/1.57, you prolly can run a .045 gasket or .010 mill as well for even more compression.

john563

iTrader: (17)

with that lift on the custom how often would i need to change springs

Joey7489

iTrader: (21)

can anybody say... thread hijacked?